C.s.a.

[bf03yvd]

Can someone explain what a Cross Sectional Area does please ? New to this, so i'm at the idiots guide stage lol:seeya:

 

[Marvo]

The cross sectional area of a wire determines its size and therefore is a determining factor in its current carrying capacity.

 

[telectrix]

resistance is inversly proportional to csa.

 

[MDJ]

Can someone explain what a Cross Sectional Area does please ? New to this, so i'm at the idiots guide stage lol:seeya:

Hey, are you in training? if so my advice would be to ask permission to gain entry to the trainee area, you may get a bashing in the open forums.

 

[Badged01]

In what sense? Its just the cross sectional area of something ..... brick, tile, cable, circle, cigar!

 

[dazza1981]

the cross sectional area of a wire determines its size and therefore is a determining factor in its current carrying capacity.

nuff said !!!!!

 

[NickD]

Um...it doesn't do anything, it just is. It's the surface area of a slice taken through a conductor. So if your conductor is a copper bar which has a square cross section and the square is 10mm on each side, you have a 10x10 = 100mm squared cross sectional area. Normally we're talking conductors which are circular in cross-section, or multiple conductors stranded together. A single circular cross section conductor with a diameter of 1.78mm you can work out has a cross section area of 2.5 mm squared. Seven of those stranded together would have a cross sectional area of 17.5 mm squared. And so on.

The relevance of it is, the more conductor cross sectional area there is, the less resistance it puts up to the electric current being pushed down it, and so the less volts it drops along its length as the current passes, and the less it heats up because of the current. It's like a water pipe - the bigger the pipe, the more water you can get down it with less pressure loss.

 

[bf03yvd]

I don't understand forums. I just posted it and hoped for the best.

 

[NickD]

Don't worry about it too much. Did one or more of the answers help?

 

[Badged01]

But whats your question? We can help you if you dont tell us what you want to know about the cross sectional area. Its a big world out there .....

 

[Richard Burns]

Oh well I have scanned the page now!

 

[telectrix]

hmm. what does c.s.a. do? takes a bloody great chunk of wages to keep the ex. in booze and smokes. kids walk round in rags.

 

[GMES]

So are younow saying that there are 2 things you don't understand
1. csa
2. forums
now i dont understand what you dont understand, if you understand what i mean!

 

[NickD]

But whats your question? We can help you if you dont tell us what you want to know about the cross sectional area. Its a big world out there .....

127 million kilometres squared cross-section, to be precise

 

[Silly Sausage]

The relevance of it is, the more conductor cross sectional area there is, the less resistance it puts up to the electric current being pushed down it, and so the less volts it drops along its length as the current passes, and the less it heats up because of the current. It's like a water pipe - the bigger the pipe, the more water you can get down it with less pressure loss.

So does that mean, if I fit out my house with tiny bore water pipes I'll get free hot water?
Save a frigging fortune on the gas bill!